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Triple Dereference

Time of First Successful Submission: 2025-11-14 07:17:19

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-11-05 22:36:35

Command Arguments

Time of First Successful Submission: 2025-11-05 22:38:10

Command History

Time of First Successful Submission: 2025-11-05 22:39:23

The Root Path

Time of First Successful Submission: 2025-11-06 08:31:48

Absolute Paths

Time of First Successful Submission: 2025-11-06 08:33:02

Changing position

Time of First Successful Submission: 2025-11-06 08:35:14

Changing to an Absolute Path

Time of First Successful Submission: 2025-11-06 08:36:58

Relative Paths

Time of First Successful Submission: 2025-11-06 08:41:00

Cat

Time of First Successful Submission: 2025-11-06 08:55:43

Ls

Time of First Successful Submission: 2025-11-06 09:16:42

Ls All

Time of First Successful Submission: 2025-11-06 09:22:22

Find

Time of First Successful Submission: 2025-11-06 09:36:37

Piping Echo

Time of First Successful Submission: 2025-11-06 19:57:55

Piping Stdout

Time of First Successful Submission: 2025-11-06 19:59:50

Piping Stdin

Time of First Successful Submission: 2025-11-07 09:18:31

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-11-05 14:27:03

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-05 14:36:52

Using the GUI Desktop

Time of First Successful Submission: 2025-11-05 14:30:35

Pasting into the Desktop

Time of First Successful Submission: 2025-11-05 14:39:57

Restarting Challenges

Time of First Successful Submission: 2025-11-05 14:42:50

Challenge Programs

Time of First Successful Submission: 2025-11-05 14:50:13

The Flag File

Time of First Successful Submission: 2025-11-05 14:52:52

Using Privileged Mode

Time of First Successful Submission: 2025-11-05 14:56:06

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-05 15:01:06

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-05 15:01:50

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-11-05 22:36:35

Intro to Arguments

Time of First Successful Submission: 2025-11-05 22:38:10

Command History

Time of First Successful Submission: 2025-11-05 22:39:23

The Root

Time of First Successful Submission: 2025-11-06 08:31:48

Program and absolute paths

Time of First Successful Submission: 2025-11-06 08:33:02

Position thy self

Time of First Successful Submission: 2025-11-06 08:35:14

Position elsewhere

Time of First Successful Submission: 2025-11-06 08:36:58

implicit relative paths, from /

Time of First Successful Submission: 2025-11-06 08:41:00

explicit relative paths, from /

Time of First Successful Submission: 2025-11-06 08:42:25

implicit relative path

Time of First Successful Submission: 2025-11-06 08:44:59

home sweet home

Time of First Successful Submission: 2025-11-06 08:52:18

cat: not the pet, but the command!

Time of First Successful Submission: 2025-11-06 08:55:43

catting absolute paths

Time of First Successful Submission: 2025-11-06 08:56:48

more catting practice

Time of First Successful Submission: 2025-11-06 09:05:25

grepping for a needle in a haystack

Time of First Successful Submission: 2025-11-06 09:07:02

comparing files

Time of First Successful Submission: 2025-11-06 09:13:57

listing files

Time of First Successful Submission: 2025-11-06 09:16:42

touching files

Time of First Successful Submission: 2025-11-06 09:17:54

removing files

Time of First Successful Submission: 2025-11-06 09:18:52

moving files

Time of First Successful Submission: 2025-11-06 09:20:11

copying files

Time of First Successful Submission: 2025-11-06 09:20:52

hidden files

Time of First Successful Submission: 2025-11-06 09:22:22

An Epic Filesystem Quest

Time of First Successful Submission: 2025-11-06 09:29:56

making directories

Time of First Successful Submission: 2025-11-06 09:31:04

finding files

Time of First Successful Submission: 2025-11-06 09:36:37

linking files

Time of First Successful Submission: 2025-11-06 10:16:46

Learning From Documentation

Time of First Successful Submission: 2025-11-06 10:22:12

Learning Complex Usage

Time of First Successful Submission: 2025-11-06 10:24:05

Reading Manuals

Time of First Successful Submission: 2025-11-06 10:30:04

Searching Manuals

Time of First Successful Submission: 2025-11-06 10:33:20

Searching For Manuals

Time of First Successful Submission: 2025-11-06 10:42:24

Helpful Programs

Time of First Successful Submission: 2025-11-06 10:46:03

Help for Builtins

Time of First Successful Submission: 2025-11-06 10:48:19

Matching with *

Time of First Successful Submission: 2025-11-06 11:07:41

Matching with ?

Time of First Successful Submission: 2025-11-06 11:10:02

Matching with []

Time of First Successful Submission: 2025-11-06 11:12:32

Matching paths with []

Time of First Successful Submission: 2025-11-06 11:15:27

Multiple globs

Time of First Successful Submission: 2025-11-06 11:17:37

Mixing globs

Time of First Successful Submission: 2025-11-06 11:19:25

Exclusionary globbing

Time of First Successful Submission: 2025-11-06 11:20:52

Tab completion

Time of First Successful Submission: 2025-11-06 11:22:27

Multiple options for tab completion

Time of First Successful Submission: 2025-11-06 11:25:02

Tab completion on commands

Time of First Successful Submission: 2025-11-06 11:25:55

Redirecting output

Time of First Successful Submission: 2025-11-06 19:57:55

Redirecting more output

Time of First Successful Submission: 2025-11-06 19:59:50

Appending output

Time of First Successful Submission: 2025-11-06 20:08:07

Redirecting errors

Time of First Successful Submission: 2025-11-06 20:17:32

Redirecting input

Time of First Successful Submission: 2025-11-07 09:18:31

Grepping stored results

Time of First Successful Submission: 2025-11-07 09:20:30

Grepping live output

Time of First Successful Submission: 2025-11-07 09:23:41

Grepping errors

Time of First Successful Submission: 2025-11-07 09:29:40

Filtering with grep -v

Time of First Successful Submission: 2025-11-07 09:32:33

Filtering with sed

Time of First Successful Submission: 2025-11-07 09:37:46

Duplicating piped data with tee

Time of First Successful Submission: 2025-11-07 10:32:27

Process substitution for input

Time of First Successful Submission: 2025-11-07 10:47:55

Writing to multiple programs

Time of First Successful Submission: 2025-11-07 10:56:46

Split-piping stderr and stdout

Time of First Successful Submission: 2025-11-07 11:01:32

Named pipes

Time of First Successful Submission: 2025-11-07 11:19:16

Printing Variables

Time of First Successful Submission: 2025-11-07 11:30:26

Setting Variables

Time of First Successful Submission: 2025-11-07 11:39:35

Multi-word Variables

Time of First Successful Submission: 2025-11-07 11:41:49

Exporting Variables

Time of First Successful Submission: 2025-11-07 11:46:02

Printing Exported Variables

Time of First Successful Submission: 2025-11-07 11:47:33

Storing Command Output

Time of First Successful Submission: 2025-11-07 11:53:01

Reading Input

Time of First Successful Submission: 2025-11-07 14:20:28

Reading Files

Time of First Successful Submission: 2025-11-07 14:23:24

Translating characters

Time of First Successful Submission: 2025-11-07 16:37:46

Deleting characters

Time of First Successful Submission: 2025-11-07 16:40:27

Deleting newlines

Time of First Successful Submission: 2025-11-07 16:43:16

Extracting the first lines with head

Time of First Successful Submission: 2025-11-07 16:45:02

Extracting specific sections of text

Time of First Successful Submission: 2025-11-07 16:58:29

Sorting data

Time of First Successful Submission: 2025-11-07 17:06:12

Listing Processes

Time of First Successful Submission: 2025-11-07 22:12:04

Killing Processes

Time of First Successful Submission: 2025-11-07 22:17:20

Interrupting Processes

Time of First Successful Submission: 2025-11-07 22:18:30

Killing Misbehaving Processes

Time of First Successful Submission: 2025-11-07 22:23:06

Suspending Processes

Time of First Successful Submission: 2025-11-07 22:27:27

Resuming Processes

Time of First Successful Submission: 2025-11-07 22:28:37

Backgrounding Processes

Time of First Successful Submission: 2025-11-07 22:40:32

Foregrounding Processes

Time of First Successful Submission: 2025-11-07 22:45:10

Starting Backgrounded Processes

Time of First Successful Submission: 2025-11-07 22:46:59

Process Exit Codes

Time of First Successful Submission: 2025-11-07 23:03:27

Becoming root with su

Time of First Successful Submission: 2025-11-07 23:16:13

Other users with su

Time of First Successful Submission: 2025-11-07 23:20:42

Cracking passwords

Time of First Successful Submission: 2025-11-07 23:34:01

Using sudo

Time of First Successful Submission: 2025-11-07 23:41:37

Changing File Ownership

Time of First Successful Submission: 2025-11-08 08:43:40

Groups and Files

Time of First Successful Submission: 2025-11-08 09:53:29

Fun With Groups Names

Time of First Successful Submission: 2025-11-08 09:55:07

Changing Permissions

Time of First Successful Submission: 2025-11-08 10:07:54

Executable Files

Time of First Successful Submission: 2025-11-08 10:12:29

Permission Tweaking Practice

Time of First Successful Submission: 2025-11-08 10:27:23

Permissions Setting Practice

Time of First Successful Submission: 2025-11-08 10:40:33

The SUID Bit

Time of First Successful Submission: 2025-11-08 10:52:14

Chaining with Semicolons

Time of First Successful Submission: 2025-11-08 10:57:45

Building on Success

Time of First Successful Submission: 2025-11-08 11:00:03

Handling Failure

Time of First Successful Submission: 2025-11-08 11:02:10

Your First Shell Script

Time of First Successful Submission: 2025-11-08 11:05:43

Redirecting Script Output

Time of First Successful Submission: 2025-11-08 11:15:37

Executable Shell Scripts

Time of First Successful Submission: 2025-11-08 11:19:29

Understanding Shebangs

Time of First Successful Submission: 2025-11-08 11:32:54

Scripting with Arguments

Time of First Successful Submission: 2025-11-08 11:36:32

Scripting with Conditionals

Time of First Successful Submission: 2025-11-08 11:40:16

Scripting with Default Cases

Time of First Successful Submission: 2025-11-08 11:44:48

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-08 11:47:58

Reading Shell Scripts

Time of First Successful Submission: 2025-11-08 11:52:05

Launching Screen

Time of First Successful Submission: 2025-11-09 07:43:04

Detaching and Attaching

Time of First Successful Submission: 2025-11-09 07:46:32

Finding Sessions

Time of First Successful Submission: 2025-11-09 07:48:18

Switching Windows

Time of First Successful Submission: 2025-11-09 07:51:49

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-09 07:58:48

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-09 08:03:44

The PATH Variable

Time of First Successful Submission: 2025-11-09 08:13:41

Setting PATH

Time of First Successful Submission: 2025-11-09 08:20:37

Finding Commands

Time of First Successful Submission: 2025-11-09 10:16:14

Adding Commands

Time of First Successful Submission: 2025-11-09 16:35:33

Hijacking Commands

Time of First Successful Submission: 2025-11-09 17:29:02

Bashrc Backdoor

Time of First Successful Submission: 2025-11-09 17:42:39

Sniffing Input

Time of First Successful Submission: 2025-11-10 08:47:29

Overshared Directories

Time of First Successful Submission: 2025-11-11 10:24:24

Tricky Linking

Time of First Successful Submission: 2025-11-11 10:39:38

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-11 10:44:20

Snooping on Configurations

Time of First Successful Submission: 2025-11-11 10:52:39

The Fork Bomb

Time of First Successful Submission: 2025-11-11 11:30:44

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-11 11:45:04

rm -rf /

Time of First Successful Submission: 2025-11-11 11:49:19

Life after rm -rf /

Time of First Successful Submission: 2025-11-11 12:09:51

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-11 12:14:38

Computing 101

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Your First Register

Time of First Successful Submission: 2025-11-11 13:57:57

Your First Syscall

Time of First Successful Submission: 2025-11-11 14:13:49

Exit Codes

Time of First Successful Submission: 2025-11-11 14:18:48

Building Executables

Time of First Successful Submission: 2025-11-11 14:33:47

Moving Between Registers

Time of First Successful Submission: 2025-11-11 14:37:15

Loading From Memory

Time of First Successful Submission: 2025-11-14 06:34:25

More Loading Practice

Time of First Successful Submission: 2025-11-14 06:39:04

Dereferencing Pointers

Time of First Successful Submission: 2025-11-14 06:45:14

Dereferencing Yourself

Time of First Successful Submission: 2025-11-14 06:50:31

Dereferencing with Offsets

Time of First Successful Submission: 2025-11-14 06:57:28

Stored Addresses

Time of First Successful Submission: 2025-11-14 07:12:55

Double Dereference

Time of First Successful Submission: 2025-11-14 07:16:05

Tracing Syscalls

Time of First Successful Submission: 2025-11-11 14:44:50

Starting GDB

Time of First Successful Submission: 2025-11-11 14:46:12

Starting Programs in GDB

Time of First Successful Submission: 2025-11-11 14:48:16

Writing Output

Time of First Successful Submission: 2025-11-14 09:21:52

Chaining Syscalls

Time of First Successful Submission: 2025-11-14 09:24:46

Writing Strings

Time of First Successful Submission: 2025-11-14 09:33:07

Reading Data

Time of First Successful Submission: 2025-11-14 09:43:53

set-register

Time of First Successful Submission: 2025-11-14 11:09:06

set-multiple-registers

Time of First Successful Submission: 2025-11-14 11:12:23

add-to-register

Time of First Successful Submission: 2025-11-14 11:15:30

linear-equation-registers

Time of First Successful Submission: 2025-11-14 11:18:25

integer-division

Time of First Successful Submission: 2025-11-14 11:41:36

modulo-operation

Time of First Successful Submission: 2025-11-14 11:44:37

set-upper-byte

Time of First Successful Submission: 2025-11-15 09:57:39

efficient-modulo

Time of First Successful Submission: 2025-11-15 10:33:21

byte-extraction

Time of First Successful Submission: 2025-11-15 10:57:04

bitwise-and

Time of First Successful Submission: 2025-11-15 11:01:56

check-even

Time of First Successful Submission: 2025-11-15 11:25:45

memory-read

Time of First Successful Submission: 2025-11-15 11:31:18

memory-write

Time of First Successful Submission: 2025-11-15 11:33:19

memory-increment

Time of First Successful Submission: 2025-11-16 10:22:43

byte-access

Time of First Successful Submission: 2025-11-16 10:25:57

memory-size-access

Time of First Successful Submission: 2025-11-16 10:28:25

little-endian-write

Time of First Successful Submission: 2025-11-16 16:10:07

memory-sum

Time of First Successful Submission: 2025-11-16 16:48:47

stack-subtraction

Time of First Successful Submission: 2025-11-16 16:51:47

swap-stack-values

Time of First Successful Submission: 2025-11-16 16:59:07

average-stack-values

Time of First Successful Submission: 2025-11-17 12:58:43

absolute-jump

Time of First Successful Submission: 2025-11-17 13:06:27

relative-jump

Time of First Successful Submission: 2025-11-17 13:33:56

jump-trampoline

Time of First Successful Submission: 2025-11-17 14:08:23

conditional-jump

Time of First Successful Submission: 2025-11-17 20:07:06

indirect-jump

Time of First Successful Submission: 2025-11-17 21:15:28

average-loop

Time of First Successful Submission: 2025-11-20 17:48:15

count-non-zero

Time of First Successful Submission: 2025-11-21 09:46:56

string-lower

Time of First Successful Submission: 2025-11-21 18:35:13

most-common-byte

Time of First Successful Submission: 2025-12-01 12:57:31

Debugging Programs

Time of First Successful Submission: 2025-12-01 13:58:48

Inspecting Registers

Time of First Successful Submission: 2025-12-01 14:03:12

Examining Memory

Time of First Successful Submission: 2025-12-01 14:45:47

Playing With Programs

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What's the password?

Time of First Successful Submission: 2025-12-05 10:53:45

... and again!

Time of First Successful Submission: 2025-12-05 10:54:27

Newline Troubles

Time of First Successful Submission: 2025-12-05 10:57:25

Reasoning about files

Time of First Successful Submission: 2025-12-05 11:25:27

Specifying Filenames

Time of First Successful Submission: 2025-12-05 11:30:31

Binary and Hex Encoding

Time of First Successful Submission: 2025-12-05 12:03:35

More Hex

Time of First Successful Submission: 2025-12-05 12:10:17

Decoding Hex

Time of First Successful Submission: 2025-12-05 12:17:08

Decoding Practice

Time of First Successful Submission: 2025-12-06 09:40:20

Encoding Practice

Time of First Successful Submission: 2025-12-06 10:05:37

Hex-encoding ASCII

Time of First Successful Submission: 2025-12-06 15:01:58

Nested Encoding

Time of First Successful Submission: 2025-12-06 15:09:15

Hex-encoding UTF-8

Time of First Successful Submission: 2025-12-06 15:34:10

UTF Mixups

Time of First Successful Submission: 2025-12-06 15:54:23

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-11-05 14:27:03

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-05 14:36:52

Using the GUI Desktop

Time of First Successful Submission: 2025-11-05 14:30:35

Pasting into the Desktop

Time of First Successful Submission: 2025-11-05 14:39:57

Restarting Challenges

Time of First Successful Submission: 2025-11-05 14:42:50

Getting Help

Time of First Successful Submission: 2025-11-05 14:46:44

Challenge Programs

Time of First Successful Submission: 2025-11-05 14:50:13

The Flag File

Time of First Successful Submission: 2025-11-05 14:52:52

Using Privileged Mode

Time of First Successful Submission: 2025-11-05 14:56:06

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-05 15:01:06

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-05 15:01:50